## Using Geometry Parts and Part Libraries in COMSOL Multiphysics®

##### Magnus Ringh February 22, 2019

If you’re working with a model that contains complex geometries, you can use geometry parts and the part libraries to streamline and simplify your model setup.

### Performing Topology Optimization with the Density Method

##### Kristian Ejlebjærg Jensen January 4, 2019

The density method simplifies the process of topology optimization. Get an overview of how to use a special density feature for topology optimization in the COMSOL® software.

### How to Use Interpolated Material Data to Model Irregular Geometries

##### Hanna Gothäll March 20, 2018

Learn how to model an irregular geometry in COMSOL Multiphysics® by importing material data. The example featured here is for an RF simulation of a human head.

### How to Build Geometries from Elevation Data to Model Irregular Shapes

##### Hanna Gothäll December 19, 2017

Say you want to build an irregular geometry of a mountain. You can do so by creating a surface of an irregular shape based on elevation data stored formats such as text, image, or DEM files.

### Modeling Irregular Shapes: How to Import Curve Data and Loft a Solid

##### Hanna Gothäll September 20, 2017

Say you want to model an irregular shape, like a human head. How do you set up the geometry? Here, we go over how to do just that by importing curve data and lofting a solid.

### Creating a Model Geometry in COMSOL Multiphysics®

##### Amelia Halliday June 29, 2017

Learn how to create a geometry directly within COMSOL Multiphysics® using geometric primitives and geometry operations. Then, watch an introductory video series to see each step in detail.

### How to Create a Randomized Geometry Using Model Methods

##### Walter Frei June 5, 2017

What does cheese have to do with setting up a COMSOL Multiphysics® model? Here, we use the random holes in a piece of Swiss cheese to demonstrate creating randomized geometries with methods.

### How to Generate Random Surfaces in COMSOL Multiphysics®

##### Bjorn Sjodin June 2, 2017

Get a comprehensive background and step-by-step guide to generating random surfaces in COMSOL Multiphysics®, such as rough surfaces and microstructures.

### How to Use Topology Optimization Results as Model Geometries

##### Hanna Gothäll February 1, 2017

Oftentimes, topology optimization is not the last step in your design process. In fact, you can use the results from a topology optimization study as model geometries for your next analysis.

### Efficiently Assign Materials in Your COMSOL Multiphysics® Model

##### Amelia Halliday September 20, 2016

To optimize your modeling processes, there are a number of built-in materials available for you to use in the COMSOL Multiphysics® software. Along with these materials are features and functionality that allow you to efficiently assign materials to geometric entities in your model. These tools help expedite the process of assigning materials, specifying material properties, and even comparing the impact of different materials on your simulation results. Here, we’ll highlight three tutorial videos that showcase how to use such tools.

### Improved Functionality and Tips for Importing STL and NASTRAN® Files

##### Hanna Gothäll September 14, 2016

STL files originating from 3D scan sources and meshes in the NASTRAN® file format are often used as bases for geometries. However, performing simulations on these realistic objects can be challenging, particularly when preparing the geometry. The COMSOL Multiphysics® software contains features for dealing with these files. Learn how to utilize this functionality as well as how to achieve good results when importing STL and NASTRAN® files.